Developed country partners in countertrade contracts have had problems with quality and timely delivery of goods from the developing country partners. How are they trying to deal with those problems?

1999,
12 of the 15 European Union (EU) member-countries agreed to begin a transition from their
national currencies to the new common currency, the euro, in what is called the euro zone.
The three countries that remained outside the euro zone as they decided whether, when, and
how to join continued to attempt currency value coordination between their currencies and
the euro.

Your question asks about problems with quality and timely delivery of goods from developing countries. The latest and most publicized example of that is some of the potentially dangerous toys recently imported from China. The American companies have recalled many of them. Just this evening I read that Mattel (makers of Fisher-Price toys) was instituting a policy to carefully inspect all toys it imports from China. Check these sites for more details.